Delta-controls 387 Series Manual do Utilizador descarregar pdf (Página 3)

002522-387-G

PRODUCT CODE

Note that not all options are available on all models!

1 :- Enclosure 4 = Ex ia (Intrinsically Safe)

R = Ex d

A = Weatherproof

F = Factory Mutual approved

2 :- Model, 387 = Gauge and Absolute Pressure

3 :- Electrical Entry 1 = M20 Internal

2 = ½" NPT Internal

4 :- Wetted Parts R = All 316 Stainless Steel

S = 17-4PH or 15-5 PH Sensor, 316 Process connection

T = All Monel (NACE)

U = All Hastelloy (NACE)

C = Hastelloy sensor, 316 Process connection

5 :- Ranges (Bar) DA = 1 D2 = 2 DE = 6

EA = 10 EB = 16 ED = 40

FA = 100 FD = 400 FE = 600

GA = 1000

6 :- Pressure Reference G = Gauge

A = Absolute

7 :- Signal Output 6 = 4 – 20 mA - 50 Volt Isolation

M = 4 – 20 mA - 500 Volt Isolation

8 :- Process Connection J = ½ " NPT External

N = G ½"A to ISO 228

V = “Autoclave” High pressure connections

9 :- Options and Treatments Codes on Application

10 :- Special Engineering Codes on Application

HAZARDOUS AREA NON-HAZARDOUS AREA

LOAD

35V(MAX) +DC

4mm EARTH

1 ohm MAX

4mm EARTH

1 ohm MAX

* TO AVOID SPURIOUS SHUNT CURRENTS

IN THE BARRIER,THE MAX VOLTAGE

SHOULD BE LIMITED TO APPROX 27.5V

28V +

28V + *

28V

300

28V

300

10V

4mm

EARTH

1 ohm MAX

SHUNT ZENER BARRIERS

Nb ALL SHUNT ZENER BARRIER

SYSTEMS REQUIRE AN IS EARTH

WHEN USED WITH MODEL 4-387.

SIGNAL CODE 6 OR 7 IS NOT

NECESSARY WITH SIGNAL CODES

M OR N.

METHOD 1

BARRIER WITH EARTH RETURN.

LOAD IS FLOATING WITH RESPECT

TO EARTH.

METHOD 2

BARRIER WITH 10V/50ohm RETURN.

LOAD MAY BE EARTHED.

METHOD 3

ACTIVE ZENER BARRIER GIVES

HIGHER POWER CAPABILITY AT

LOAD.

TYPICAL MODELS: MTL 702.

PEPPERL AND FUCHS

ZG30Ex.

Fig 1

SUPPLY

VOLTAGE

REQUIRED

EXTERNAL LOAD Kilo hm

1.6

1.4

1.2

0.8

0.6

0.4

0.2

VOLTAGE v LOAD

Voltage to be within triangular area

Fig 2

Fig 3

1 2 3 4

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